To increase our own knowledge and appreciation of space, to promote the space sciences to the public and to support Chabot Space and Science Center.

Eastbay Astronomical Society

The Eastbay Astronomical Society serves Bay Area residents and astronomy enthusiasts with events, classes, and Oakland’s premier views of the universe. Experience the wonder of gazing into infinity with the friendly experts at EAS by attending our events and joining the club!

Next Special Event

Next General Meeting

Our next general meeting will be on February 23rd at 7:30pm at the Chabot Space and Science Center's Galileo Room.

Our speaker will be Javier Barbuzano,
Science Journalist for Sky and Telescope and El Pais.

"The Moon Mess" is the title of his talk. Every once in a while we need to revisit our theories of the Moon's origin. Join us to hear the latest theories and what science is doing to reconcile the myriad of contradictory evidence.

Astronomy Fun Fact

Contrary to popular wisdom, the March Equinox can take place on March 19, 20 or 21 (UTC). In the 21st century, the March Equinox has only occurred twice on March 21 – 2003 and 2007. A March 19 equinox will be more frequent during the last decades of the century.

Join Us

The mission of the Eastbay Astronomical Society is to increase the public's knowledge of astronomy and the space sciences, introduce the infinite wonder and intrigue of the night sky to everyone, and support the Chabot Space & Science Center.

Amateur astronomers of every age and level of experience are welcome at our events. Join us here!